Cadillac Sixteen
Encyclopedia
The Cadillac Sixteen was a prototype
Prototype
A prototype is an early sample or model built to test a concept or process or to act as a thing to be replicated or learned from.The word prototype derives from the Greek πρωτότυπον , "primitive form", neutral of πρωτότυπος , "original, primitive", from πρῶτος , "first" and τύπος ,...

 of a stylish and high performance automobile
Automobile
An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

 first presented by Cadillac
Cadillac
Cadillac is an American luxury vehicle marque owned by General Motors . Cadillac vehicles are sold in over 50 countries and territories, but mostly in North America. Cadillac is currently the second oldest American automobile manufacturer behind fellow GM marque Buick and is among the oldest...

 in 2003.

The vehicle was equipped with a 32-valve V16
V16 engine
A V16 engine is a V engine with 16 cylinders. Engines of this number of cylinders are uncommon in automotive use.A V16 engine is perfectly balanced regardless of the V angle without requiring counter-rotating balancing shafts which are necessary to balance Straight-4 and odd number of cylinder...

 concept engine displacing 13.6 liters (~830 cu. in) and was mated to a four-speed, electronically controlled, automatic transmission driving the rear wheels. The engine featured fuel-saving Active Fuel Management
Active Fuel Management
Active Fuel Management is a trademarked name for the automobile variable displacement technology from General Motors. It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy...

 technology, much improved from its notorious ancestor, debuting in 2004 on some 2005 GM
General Motors
General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...

 models. On the Sixteen, it would seamlessly shut down twelve cylinders in light driving, eight during strenuous driving, and only awaken the entire engine under full acceleration. With this type of system, the engine was capable of 20 mpg Imperial under normal conditions. The engine was said to produce 1000 hp using no form of forced induction
Forced induction
Forced induction is the process of compressing air on the intake of an internal combustion engine . A forced induction engine uses a gas compressor to increase the pressure, temperature and density of the air...

. The car itself weighs about 2270 kilograms (5,004.5 lb).
The car was conceptually related to the Cadillac V-16 of the 1930s. The actual design of the car was a combination of Cadillac's current "Art and Science" design theme and 1967 Cadillac Eldorado
Cadillac Eldorado
The 1953 Eldorado was a special-bodied, low-production convertible . It was the production version of the 1952 El Dorado "Golden Anniversary" concept car, and borrowed bumper bullets from the 1951 GM Le Sabre show car...

 cues. Additional original design elements were provided by an in-house design competition led by GM Vice President Robert Lutz. The Sixteen has the Cadillac logo carved out of solid crystal on the steering wheel and a Bulgari
Bulgari
Bulgari is an Italian jeweler and luxury goods retailer which has been owned by the French firm LVMH since October 2011. The trademark is usually written "BVLGARI" in the classical Latin alphabet , and is derived from the surname of the company's Greek founder, Sotirio Voulgaris...

 clock on the dashboard.

Although the Sixteen fell short (narrowly, by some accounts) of production approval, its legacy is alive in Cadillac's future product planning. The subsequent generation of Cadillac products, particularly the revised CTS
Cadillac CTS
The Cadillac CTS is a mid-size car manufactured by the Cadillac marque of General Motors currently available in three body styles: Sedan, Coupe, and Sport Wagon. It was introduced in 2002 as a sports sedan, replacing the Cadillac Catera. The CTS and the supercharged CTS-V variant have been named...

, have incorporated elements of the Sixteen's design. A scaled-down version of the car, referred to as the ULS (Ultra Luxury Sedan) or XLS, with a standard V8 and an optional V12, has been rumored for production since 2005, but was shelved in favor of the Cadillac XTS
Cadillac XTS
The Cadillac XTS is an upcoming full-sized luxury car from the Cadillac brand of General Motors.. It is based on an enlarged version of the Epsilon II platform. The XTS will replace both the DTS and the STS sedans. It will begin production in early 2012 at the Oshawa Assembly Plant...

.

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